CVE-2020-25878: Blackcat-CMS Blackcat CMS

Medium severity, CVSS 4.8. EPSS: 0.5% chance of exploitation in the next 30 days.

A stored cross site scripting (XSS) vulnerability in the 'Admin-Tools' feature of BlackCat CMS 1.3.6 allows authenticated attackers to execute arbitrary web scripts or HTML via crafted payloads entered into the 'Output Filters' and 'Droplets' modules.

Affected products

• Blackcat-CMS Blackcat CMS: version 1.3.6 only

Published 2021-07-09. Last modified 2026-06-17.